The first Captain Scarlet episode since the pilot episode (The Mysterons) to have something happen away from Earth, in this case, on the moon. I do have to laugh everytime I see those Moon Mobiles hopping around all over the place and Scarlet's comment that it's "surprisingly smooth". Interestingly, the Moon Mobiles would show up in UFO some years later, but with fixed legs and proper smooth gliding abilities. I did like Scarlet deafening Orsen as well, which is worth a chuckle. It's again nice to see Lieutenant Green getting in some action. I do feel sorry for the colonel though, being stuck with Captain Magenta in the control room while he's gone. The controller's destroying of SID was spectacular if a little out of character even for a Mysteron. Surely he could grasp the fact that his disk had been taken. Anyway, a fine episode and one that gets the "moon arc" of episodes off to a good start.